Oven door



Nov. 29, 1949 c. L. HARDwlcK 2,489,962

OVEN DOOR Filed Nov. 29, 1946 2 Sheets-Sheet 1 Nov. 29, 1949 c. l..HARDwlcK 2,489,962

OVEN DOOR Filed Nov. 29, 1946 2 Sheets-Sheet 2 ineen/fof: Chf/'z'sfopfrL. Hardw/wwf" Patented Nov. 29, 1949 UNITED STATES eaTaNT oFFlcE 2Claims.

My invention relates to stove doors and more particularly to that typeof oven door which is provided with a covered opening or window therein,thus enabling the housewife to note the progress of the baking orroasting at any time desired without opening the door itself.

It has been the custom heretofore to cover the Window opening in suchdoors with at least two spaced panes, the air space between them servlngto reduce the escape of heat to a minimum. However, considerable troublehas been experienced due to the fact that the glasses could not besealed tightly together and consequently, fumes and greasy odors fromcooking would co1- lect in the inaccessible space between them and fromwhere they could not be readily cleaned oi by the housewife.

One of the principal objects of the present invention is to overcome theforegoing objections by providing adequate seals at both outer and innerfaces of the panes.

Other objects and advantages of my invention will be apparent as thedescription is considered with the accompanying drawings, in which:

Figure 1 is a perspective view of a stove showing my invention installedin the oven door thereof;

Figure 2 is a side elevation showing the door removed from the stove;

Figure 3 is a rear view of the door removed from the stove;

Figure 4 is a front face view of the lining plate and its brace memberor plate disassembled from the front plate and showing the manner inwhich the window glass is attached in place.; Figure 5 is a section online 5-5 of Figure 4; Figure 6 is a section on line 5 6 of Figure 4;lFigure 7 is an enlarged fragmentary detail view on the line 'I-l ofFigure 4;

Figure 8 is an enlarged fragmentary detail view taken on the line 8--8of Figure 4, and

Figure 9 is an enlarged fragmentary detailed view of a modied form ofwindow unit showing the use of three spaced panes.

Referring more particularly to the drawings Ik;

denotes a cooking stove or range comprising a body 2 supported upon abase 3 and provided with top burner openings 4. The body 2 is alsoprovided with side utility compartments 5, a

single bottom utility compartment 6 and an oven compartment l, all ofconventional construction. The oven opening is normally closed by a door8 hinged at its bottom edge in any desirable manner, not shown.

The oven door 8 consists of a front enameled rectangular sheet metalplate 9 and a back lina bottom edges and adapted to receive or litsnugly over corresponding flange I 2, projecting outwardly or forwardlyfrom the side, top and bottom edges of the lining plate Ill. The bottomhorizontally disposed portion of inwardly or rearwardly extending flangeII is formed with an upwardly bent extension I3 which preventsseparation of the plates 9 and I0 at their lower ends. The upper end ofthe lining plate I0 seats against arpair of spacing brackets I4, onlyone of which is shown, secured to and projecting rearwardly from theupper rear vface of the front plate 9. These brackets are provided withapertures I5, which register with corresponding apertures IB in thelining plate for a purpose presently described. By rst inserting-thelower end of the lining plate behind the extension` I3 the lining platemember I0 can be readily moved into place within the confines of flangeII, and in position to be secured to theUfront-'plate 9. This isaccomplished by means of headed screws 50, adapted to be insertedforwardly through apertures I6 and thence through apertures I5, in theorder named. Any suitable means, not shown, is employed to hinge thelower end edge of the oven door 8 to the stove body 2, and curved arms20 projecting rearwardly and downwardly from the sides of ange I 2, areformed with hook shaped ends 2| adapted to be connected to conventionalspring mechanism, not shown, for normally maintaining the door 8 inclosed or open position. Both front plate 9 and lining plate I0 areprovided with rectangularwindow openings Il and I8 respectively.

Secured snugly to the lining plate in any suitable manner, as by weldingcontacting areas, isA

a brace member 0r plate I9, conforming in general outline and shape withplate Ill, and serving to brace and reinforce the lining member or plateIQ. This brace member is formed with a rectangular window opening 22which, generally speaking, registers with the window openings I 'l and I3 just described andthe intermediate portionv of the brace member isbellied forwardly, as at 35, from the correspondingly rearwardly bent orbellied adjacent portion 36, of the lining plate I, for a purposepresently described.

The window openings previously described are normally closed by areadily assembled and disassembled glass holding unit or member 23 inWhich spaced front and rear glass members 24 and 25 are respectivelysupported. The unit 23 comprises front and rear rectangular framemembers 2li and 2l and a U-shaped rectangular spacing member 28, ofnarrow thin sheet metal. The body of the front member 26, along theside, top and bottom portions thereof, is bent forwardly and thenceinwardly to respectively provide flanges 29 and 3U against which theedges of the front glass member 2.4 seat. The body of the member 2l iscorrespondingly bent' rearwardlyand thence inwardly to provide flanges3| and 32 against which the edges of the rear glass member 25 seat. Itwill be seen that the outwardly extending anges 33 and 34 of spacingmember 28! are snugly received between the inner side edges of theopposing faces of the panes 24 and 25 and' also that these anges 33-34seat againstthe anges 29 and 3|. The flat adjacent facesof the.

body portions of the frame members 2li-and 2lr seat flush against eachother while the rear face ofthe'frame member 27|VV seats snuglyv againstthe bellied portion 35 of brace plate |9'; just mentioned' are secured'together and to the brace plate I9, by screws 31, whichl pass throughvaligned openings-38l and (iS-'inthe framemembers, and thence throughthreaded openings ilformed in the brace membery or plate I9, thussecuring together the component parts of unit 23, and se c-urelyattaching the latterA to the lining member or plate |01 When thepartsare thus assembledv the flanges 33 and'34'of U-shaped spac ing member 28crowd the-glassinto tight sealing contact with the flanges 3|I'and 32while a tight sealv will also-be effected between the glass holdinglframe and the brace member |95. This prevents fumesl or greasy'productsffrom gaining access to the dead'air'space between the panes.A

The unit 23 can bei assembled' at the factory, an'dfif desired the framemembers 26`and'21 may be welded, bolted ory crimped together thus makingthe unit tamper-proofl in the field; At the same time this'constructionl permits of ready dis-- assembly for replacing glass' whenbroken without interfering with the desired seal when reassembled. Theoven compartment 'I is preferably provided with an electric bulb,r notshown, for illuminating the interior of this compartment.

From an inspection ofFigure 9-1 it will be seen" that by increasing; thedepth'of either one or both ing window-openings, a brace plate connectedto-v the forward'face of saidlining plate andformed with a windowopening registeringwith said first mentioned window openings, said braceplate formed with a flat surface extending about the Window openings insaid lining plate and said brace plate, a glass supporting unitcomprising front and rear frame members having body portions insuperposed relation to each other, each of said body portions of saidframe members hav- -ing a flange extending at substantially a rightangle thereto and a flange extending parallel with Said body portion,spaced panes having their respective. edges seated against said angularflanges, a channel member engaging with said angular flanges betweensaid panes and forcing one side edge of each of the panes against one ofthe said parallel flanges, and means for connecting the body portions ofsaid frame members together and. to saidv flat surface for supportingsaid panes in alignment with said window openings.

2; AnV oven door comprising a front plate formed with a rearwardlyextending ange and a liningA plate having a forwardly projecting flangetelescoping within said first mentioned flange, abrace plate` superposedupon the front face ofthe :lining plate, registering window open-S ingsformed in said front plate, lining plate and-- brace plate, said braceplate having a forward`- bellied'portion extending about the windowopenings in saicllining plate and said brace plate, al

glass supporting unit comprising front and rear superposed frame memberssupported on said bellied portion of saidbrace plate, said front framemember having a portion thereof bent forwardly'and thence inwardlyV toform a forwardly extending. flange and' an and-sealed at their edgesagainst said forwardly and rearwardly extending flanges on said frameImembers, and a channel member between said REFERENCES ITED The followingreferences are of record in the file of this patent:

UNITED STATES PATENTS Number- NameV Date 834,968 Christenson Nov. 6,1906 2,008,345 Bl'anchford July 16, 1935 2,164,815" Hadjisky July 4,1939 2,269,506 Anderson Jan. 13, 1942 2,319,004 Lotter May 11, 19432,325,773 Hennessy Aug. 3, 1943 2,394,176 Hillebrand Feb. 5, 19462,466,847 Hardwick Apr. 12, 1949 FOREIGN PATENTS Number Country Date461,018 Great Britain Feb. 9, 1937 inwardly extending' angerespectively,said rear frame member hav-f' ingra portion thereof bent rearwardly andthence inwardly to form a rearwardly extending flange andan inwardlyextending flange respectively, a front pane and a rear pane respectivelyseated-

